Publications
This is a list of publications written by Patuxent employees since Patuxent opened in 1939. To search for Patuxent's publications by author or title, please click below to go to the USGS Publication Warehouse.
Filter Total Items: 8128
The austral peregrine falcon: Color variation, productivity, and pesticides The austral peregrine falcon: Color variation, productivity, and pesticides
The austral peregrine falcon (Falco peregrinus cassini) was studied in the Andean foot- hills and across the Patagonian steppe from November to December 1981. The birds under study (18 pairs) were reproducing at or near normal (pre-DDT) levels for other races. Pesticide residues, while elevated, were well below the values associated with reproductive failure in other populations. With...
Authors
D. H. Ellis
[Obituary] Lillian Hildebrandt Rummel, 1933-1984 [Obituary] Lillian Hildebrandt Rummel, 1933-1984
No abstract available.
Authors
Matthew C. Perry
Seasonal Influence of Nutrients on the Physiology and Behavior of Captive Canvasbacks (Aythya valisineria) Seasonal Influence of Nutrients on the Physiology and Behavior of Captive Canvasbacks (Aythya valisineria)
Captive canvasbacks (Aythya valisineria) were maintained ad libitum on five diets during the winters of 1978-79 and 1979-80 to evaluate the effects of varying protein and energy levels on feed intake and condition. Diets were formulated to simulate either a natural diet high in invertebrates or one high in vegetation. Two diets low in protein and energy simulated stress diets. Feed...
Authors
Matthew C. Perry
Construction of portable net poles and transport containers Construction of portable net poles and transport containers
No abstract available.
Authors
P.W. Sykes
Pesticide and PCB residues in the Neuse River waterdog, Necturus lewisi Pesticide and PCB residues in the Neuse River waterdog, Necturus lewisi
Residues of 6 organochlorine contaminants were found in N. lewisi from 6 sites in the Tar and Neuse river systems. Concentrations of pesticides were low and apparently related to geographic patterns of use. Levels of PCB were higher and did not seem to vary geographically.
Authors
R.J. Hall, R. M. Prouty, R.E. Ashton
Biochemical and hematological effects of lead ingestion in nestling American kestrels (Falco sparverius) Biochemical and hematological effects of lead ingestion in nestling American kestrels (Falco sparverius)
1. One-day old American kestrel (Faico sparverius) nestlings were orally dosed daily with 5 μl/g of corn oil (controls), 25, 125 or 625 mg/kg of metallic lead in corn oil for 10 days. 2. Forty per cent of the nestlings receiving 625 mg/kg of lead died after 6 days and growth rates were significantly depressed in the two highest lead dosed groups. At 10 days hematocrit values were...
Authors
D. J. Hoffman, J. C. Franson, O. H. Pattee, C.M. Bunck, H. C. Murray
Areas of localized organochlorine contamination in Arizona and New Mexico Areas of localized organochlorine contamination in Arizona and New Mexico
Wings from mallard ducks harvested in 1980 in Arizona, Arkansas, Louisiana, and New Mexico were pooled into county aggregates and analyzed for organochlorine pesticides and PCB's. Organochlorine concentrations in duck wings were compared among counties comprising major river drainages within each state. DDE concentrations in the wings of mallards collected from the Verde River and the...
Authors
W. James Fleming, B. W. Cain
Age of cavity trees and colony stands selected by red-cockaded woodpeckers Age of cavity trees and colony stands selected by red-cockaded woodpeckers
No abstract available.
Authors
R. Field, B. Kenneth Williams
Differences in the feeding behavior of little egrets (Egretta garzetta) in two habitats in the Camargue, France Differences in the feeding behavior of little egrets (Egretta garzetta) in two habitats in the Camargue, France
No abstract available.
Authors
R.M. Erwin, H. Hafner, P. Dugan
Reproduction, mortality, and heavy metal concentrations in great blue herons from three colonies in Washington and Idaho Reproduction, mortality, and heavy metal concentrations in great blue herons from three colonies in Washington and Idaho
We collected eggs in nests, hatchlings and eggs with advanced embryos on the ground, and prefledgling young of Great Blue Herons (Ardea herodias) at three nesting colonies in Washington and Idaho. Intact fish were also collected on the ground at the Idaho colony. The Ft. Lewis colony near Puget Sound in Washington and the Lake Chatcolet colony in northern Idaho were located near areas
Authors
L. J. Blus, Charles J. Henny, A. Anderson, R. E. Fitzner